I am late in joining this thread and will add only a few observations to supplement the many good comments already here: 1. Competitor collusion and express agreements to restrict the freedom of each to compete (i.e., horizontal contractual dealings) do indeed expose the colluding parties to potentially serious liabilities under the Sherman and FTC Acts. If that is what is going on here, then Mr. Arrington has fired…
"3. Parallel action by competitors is in itself normally quite harmless and does not subject them to liabilities." Not sure what your sources are, but courts have ruled that parallel action can be sufficient evidence of conspiracy under Section 2 of the Sherman Act. See e.g. American Tobacco v. United States (1946), available here: http://supreme.vlex.com/vid/american-tobacco-v-united-states... The Supreme Court wrot…
That said, normally, the mere fact of parallel action is not problematic unless there is more to show suspicious activities. The venture financing industry has many customs and patterns of long-standing, and its participants will happen to conform to them for a variety of reasons having nothing to do with collusion aimed at suppressing competition.